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Question

What is the perimeter of a quadrant of a circle with radius 3cm?


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Solution

Determine the perimeter of the quadrant of the circle.

The quadrant of a circle includes one-fourth of the circumference of the circle and two lengths that are equal to the radius.

Use the formula C=2πr and the length of the radius r=3cm to determine the perimeter:

P=2π×34cm+3cm+3cmP=1.5π+6cm

Hence, the perimeter of the quadrant is 1.5π+6cm.


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